Saltwater · Year-round on Cortez and Pacific reefs; most abundant in warmer months May–October.
Finescale Triggerfish
Balistes polylepis
The cochi — the largest eastern Pacific triggerfish — patrols rocky reefs of the Cortez and Baja, cracking sea urchins and crabs with powerful beak-like jaws; a tough-fighting, thick-skinned bottom fish.
Seasons · Peak
Identifying features
- Oval grey-brown body covered in very small fine scales (the name refers to this)
- First dorsal spine can lock erect (the 'trigger')
- Small beak-like mouth with strong incisor teeth
- Second dorsal and anal fins tall and similar in shape
Habits
- Feeds on sea urchins, small crustaceans and molluscs
- Expert bait stealer — nips baits off with its beak
- Often seen cruising just above reef and boulder bottoms
Distribution
Where to find them
- Rocky points and islands of the Sea of Cortez
- Baja Pacific boulder reefs
- Mainland rocky headlands from Nayarit to Oaxaca
Where they live
How to catch them
Dropper-loop bait over rock Boat
Rig: Tough squid chunks on dropper loops over boulders
Bait/lure: Small pieces of crab
Key tip: Fish right into the rocks with strong small hooks; triggerfish nip soft baits clean.
Shore reef bait Rock fishing
Rig: Cut bait on a strong small hook from rocky points
Bait/lure: Shrimp pieces
Key tip: Cast cut bait tight to boulder fields from shore points.
Best baits & lures
Baseline setup
- Rod: Medium 7 ft boat/shore rod
- Line: 30–40 lb line
- Terminal: Size 1/0–3/0 strong circle or J hooks, dropper loops, 2–4 oz sinkers
Recommended gear for this species
Rod · Best value
7'6" medium-heavy jigging rod
≈ US$110-170
Works 2-6 oz jigs over rock and reef and still has the backbone to lift a halibut off the bottom.
Line · Budget
50 lb braid with 40 lb leader (200 yd)
≈ US$25-40
Thin braid cuts the current so jigs stay vertical; the leader shrugs off rock and teeth.
Terminal · Budget
Leadhead jigs, swimbaits and two-hook bottom rigs
≈ US$25-40
A leadhead with a swimbait tail is the universal bottom-fish catcher, from rockfish to cod to flounder.
Picks are never paid placements. Prices are guides; price links are coming soon and none is an affiliate link yet.
Typical size
To about 76–80 cm; most catches 40–60 cm and 2–5 kg, maximum about 7.4 kg (IGFA record 7.37 kg).
On the table
Good — firm white flesh prized locally (cochino/pejepuerco dishes); thick skin must be cut away before filleting.
Similar species
Gray TriggerfishGray triggerfish is its Atlantic/Gulf counterpart with larger, plate-like scales and mottled grey skin; finescale triggerfish is the Pacific species with much finer scales.
Zebra PerchZebra perch is boldly barred and grazes algae; finescale triggerfish is plain grey-brown, beak-mouthed and crushes urchins and crabs.Regulations vary by area and can change in-season — always check the official rules for your area before you fish. Regulations guide →
Plan a trip for Finescale Triggerfish
Build today's plan⚠ Heads-up: Finescale Triggerfish doesn't occur around Vancouver, BC (or is very rare there), so it's not a sensible local target. Your plan stays in Vancouver, BC and is built around the fish that actually live there.